A high temperature X-ray powder diffraction camera has been designed a
nd fabricated with indigenous material. The camera design is similar t
o the Unicam model but overcomes some inconvenient features of the lat
ter. The camera incorporates a miniheater which is inexpensive and eas
ily replaceable. The camera enables determination of lattice parameter
s with an accuracy of +/- 0.0002 angstrom up to 800-degrees-C.